{ "schemaVersion": "1.0.0", "constitutionVersion": "1.0.0", "createdAt": "2026-08-12T00:00:00Z", "description": "Append-only Evidence Passport records. Old revisions are immutable; corrections create a new revision and preserve the previous permalink.", "entity": { "type": "project", "id": "doha-district-cooling", "title": "Qatar Cool District Cooling: West Bay and The Pearl on Sewage Effluent", "canonicalUrl": "https://1001smartcities.org/projects/doha-district-cooling/" }, "currentRevisionId": "2026-10-04-baseline", "revisions": [ { "id": "2026-10-04-baseline", "createdAt": "2026-10-04T08:04:00Z", "effectiveAt": "2026-10-04", "changeType": "baseline", "summary": "Created the first structured Evidence Passport with 13 claims and 9 source dossiers.", "preparedBy": { "type": "automation", "label": "AI-assisted evidence preparation", "humanApproved": false }, "review": { "status": "unreviewed", "by": null, "date": null, "note": "Awaiting operator and domain-expert review; publication of this revision implies neither." }, "changes": [ { "operation": "add", "path": "/evidencePassport", "summary": "Added claim-level evidence mapping and source dossiers." }, { "operation": "add", "path": "/revisionHistory", "summary": "Established a permanent, hash-addressed baseline revision." } ], "snapshotHash": "sha256:550502f3f7c05ed0001c9b6721a6538ef567f4399b33e4aca358428e50c35722", "snapshot": { "asOf": "2026-10-04", "projectFingerprint": "sha256:075c5e859c2ffa925f988928c26434ab0f7cbd6ee3a2b3c6960721979859c5f6", "assurance": { "status": "unreviewed", "scope": "evidence-passport-revision", "statement": "AI-assisted structural preparation. This revision has not been reviewed by a human or subject-matter expert.", "machineChecks": [ "schema", "publication-diff-contract", "material-project-fingerprint", "claim-text-drift", "source-reference-resolution", "complete-source-dossier", "snapshot-hash" ] }, "projectState": { "status": "live", "outcome": "ongoing", "evidenceGrade": "official", "timeline": { "started": null, "ended": null } }, "governance": { "operator": "Qatar District Cooling Company (Qatar Cool), regulated by Kahramaa", "actorTypes": [ "private", "utility", "national-government" ], "fundingModel": "private", "fundingDescription": null, "cost": null, "ownership": null, "decisionRights": null, "exitConditions": null }, "claims": [ { "id": "clm-7caaf2a610cfdb91", "field": "snippet", "text": "chills the towers of West Bay and the island development The Pearl-Qatar — both inside the Municipality of Doha", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-355a6dd51cb83b00", "src-f55d7c169100d56e" ], "supportNote": "Qatar Cool states it operates in two districts, West Bay and The Pearl-Qatar; the Pearl-Qatar article places the island in the Municipality of Doha (West Bay is Doha's central business district).", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-7672cd4ebefa51f3", "field": "snippet", "text": "Since September 2024 a command control centre at its West Bay plant uses SCADA and programmable logic controllers to monitor and control all its plants in both districts from one place", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-c7c3e48b9dd96491" ], "supportNote": "The release announces the Command Control Center in the West Bay plant with PLC and SCADA systems, which 'allows Qatar Cool to control and optimize all district cooling plants, in both the Pearl Island and West Bay districts, from a single, centralized location.'", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-4d72128812b600dc", "field": "snippet", "text": "real-time insight into plant efficiency, building operations and customer consumption", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-c7c3e48b9dd96491" ], "supportNote": "The release says the Center 'delivers real-time insights into plant efficiency, building operations, and customer consumption patterns.'", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-1d7b27d943cd55d8", "field": "snippet", "text": "smart metering at The Pearl goes back to a project begun in 2009", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-46d98f2a6a9ea9b8" ], "supportNote": "The supplier states its work with QIFEM 'dates back to 2009 when the two companies collaborated on a project that helped transform The Pearl-Qatar into a smart project with a complete end-to-end smart metering solution.'", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-f102bf13936c236f", "field": "snippet", "text": "in January 2023 Qatar Cool upgraded its Itron meter-data management system and contracted 25,000 more Itron meters", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-46d98f2a6a9ea9b8" ], "supportNote": "Release dated 10 January 2023: Qatar Cool upgraded its Itron EMMSYS MDM solution, and 'the contract also includes deployment of 25,000 Itron thermal energy meters for cooling application.'", "caveat": "The source is the meter supplier's press release; the word 'more' reflects that metering was already in place, not a stated replacement count.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-618485fa17a771fe", "field": "snippet", "text": "West Bay plants one and two were retrofitted in 2015 to run on 100% treated sewage effluent (TSE)", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-4fb1501e475c2428", "src-bd50ad986280d236" ], "supportNote": "The operator says 'Plants one and two, were retrofitted in 2015 to allow the use of direct TSE' and 'use 100% TSE in operations'; the 2017 report confirms full migration to 100 percent TSE.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-7e952ee41a08b374", "field": "snippet", "text": "the third West Bay plant has an in-house reverse-osmosis unit fed with TSE, and the two Pearl plants make their water from the sea by reverse osmosis", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-4fb1501e475c2428" ], "supportNote": "The operator's page: 'Our two Pearl Qatar cooling plants utilize a Reverse Osmosis (RO) plant, with a unique feature of using sea water' and 'Plant three in West Bay also has an inhouse RO plant which uses TSE instead of potable water.'", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-029833582baa032c", "field": "impact", "text": "moving West Bay's two operating plants from potable water to TSE — blended in gradually over 1.5 years — had cut potable water use by 1.7 million cubic metres in 18 months", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-bd50ad986280d236" ], "supportNote": "The 2017 report: TSE was blended in 'increasing the blending ratio gradually over a period of 1.5 years', and 'the reduction achieved in potable water consumption over the past 18 months is 1.7 million cubic metres.'", "caveat": "The saving is the operator's own figure as reported in the press; no independent audit was found.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-0f527408c1f0adfa", "field": "impact", "text": "Kahramaa saying district cooling can cut electricity consumption by 30 to 40% compared with conventional air-conditioning and counting around 70 district cooling plants in Qatar", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-6d5ed52db558644f" ], "supportNote": "The report quotes Kahramaa: district cooling systems 'can reduce electricity consumption by 30 to 40% compared with conventional air-conditioning systems' and 'Around 70 district cooling plants are currently operational in Qatar'.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-13f372f569db1972", "field": "impact", "text": "the regulator added decisions designating district cooling service areas and governing network access to public land", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-2e3943a0324b7fe5" ], "supportNote": "Kahramaa announced Decision No. 03 designating district cooling service areas and Decision No. 04 regulating licensed providers' access to public lands and properties.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-5c201b0d96ce1363", "field": "lesson", "text": "Qatar Cool says its West Bay plants switched to TSE in 2015 as part of a water scarcity resolution issued by Kahramaa", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-4fb1501e475c2428" ], "supportNote": "The operator's page: 'Our West Bay cooling plants switched to treated sewage effluent in our operations in 2015 as part of the water scarcity resolution issued by Kahramaa.'", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-df466f06e222754b", "field": "lesson", "text": "Law No. 19 of 2024 now prohibits desalinated water for district cooling and makes a Kahramaa licence mandatory to operate a system", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-f84ea2cb17659468" ], "supportNote": "The summary states that under Law No. 19 of 2024 'a license from the KAHRAMAA is mandatory' to establish or operate a district cooling system, and 'the use of desalinated water for district cooling is prohibited'.", "caveat": "The Pearl plants produce their own make-up water from seawater by reverse osmosis; the sources read do not say how the prohibition applies to on-site desalination.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-7b710cdeb1e0f640", "field": "lesson", "text": "The energy case, by contrast, still rests on sector-wide percentages rather than a plant-level comparison anyone outside the operator can check", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-6d5ed52db558644f", "src-c7c3e48b9dd96491" ], "supportNote": "The only energy figures found are Kahramaa's sector-wide 30 to 40% estimate; Qatar Cool's command-centre release describes efficiency monitoring but publishes no measured saving. This is a finding about the absence of a source, so no single passage carries it.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } } ], "sources": [ { "id": "src-c7c3e48b9dd96491", "title": "Qatar Cool, Command Control Center press release (operator)", "url": "https://qatarcool.com/qa/qatar-cool-unveils-innovative-command-control-center-in-west-bay-reinforcing-commitment-to-sustainability-and-efficiency/", "publisher": { "name": null, "domain": "qatarcool.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-7672cd4ebefa51f3", "clm-4d72128812b600dc", "clm-7b710cdeb1e0f640" ], "temporal": { "publishedAt": "2024-09-15", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-10-04", "dossierCreatedAt": "2026-10-04", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Qatar Cool's announcement of a Command Control Center at its West Bay plant: PLC and SCADA systems giving real-time insight into plant efficiency, building operations and customer consumption, and control of all district cooling plants in the Pearl Island and West Bay districts from one location, with a duplicate environment for remote operation. Kahramaa officials attended the launch.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-4fb1501e475c2428", "title": "Qatar Cool, Water and Energy page (operator)", "url": "https://qatarcool.com/qa/water-and-energy/", "publisher": { "name": null, "domain": "qatarcool.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-618485fa17a771fe", "clm-7e952ee41a08b374", "clm-5c201b0d96ce1363" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-10-04", "dossierCreatedAt": "2026-10-04", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "The operator's standing sustainability page: West Bay plants one and two retrofitted in 2015 for 100% direct TSE; West Bay plant three with an in-house RO plant using TSE; the two Pearl plants using seawater reverse osmosis; a thermal energy storage tank; and the statement that the West Bay switch to TSE in 2015 was part of a water scarcity resolution issued by Kahramaa.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-bd50ad986280d236", "title": "The Peninsula, Qatar Cool helps conserve natural resources (14 Aug 2017) (press)", "url": "https://www.thepeninsulaqatar.com/article/14/08/2017/Qatar-Cool-helps-conserve-natural-resources", "publisher": { "name": null, "domain": "thepeninsulaqatar.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-618485fa17a771fe", "clm-029833582baa032c" ], "temporal": { "publishedAt": "2017-08-14", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-10-04", "dossierCreatedAt": "2026-10-04", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Report of Qatar Cool's migration of its two operational West Bay plants from potable water to 100% TSE, phased in over 1.5 years under close monitoring of make-up and blow-down water quality, saving 1.7 million cubic metres of potable water in 18 months.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-46d98f2a6a9ea9b8", "title": "Itron, Qatar Cool meter data management upgrade (vendor)", "url": "https://na.itron.com/w/itron-collaborates-with-qatar-cool", "publisher": { "name": null, "domain": "na.itron.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-1d7b27d943cd55d8", "clm-f102bf13936c236f" ], "temporal": { "publishedAt": "2023-01-10", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-10-04", "dossierCreatedAt": "2026-10-04", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Supplier press release: Qatar Cool upgraded its Itron EMMSYS meter data management system and contracted 25,000 Itron thermal energy meters, deployed with channel partner QIFEM; the partners' work dates back to a 2009 smart-metering project at The Pearl-Qatar. Quotes Qatar Cool's CEO.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-6d5ed52db558644f", "title": "Gulf Times, District cooling helps reduce electricity usage (18 May 2026) (press)", "url": "https://www.gulf-times.com/article/725732/qatar/district-cooling-helps-reduce-electricity-usage", "publisher": { "name": null, "domain": "gulf-times.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-0f527408c1f0adfa", "clm-7b710cdeb1e0f640" ], "temporal": { "publishedAt": "2026-05-18", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-10-04", "dossierCreatedAt": "2026-10-04", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Report of Kahramaa's statements on district cooling: electricity savings of 30 to 40% compared with conventional air-conditioning, around 70 operational plants in Qatar with about 1.15 million refrigeration tonnes, and 18.5 million cubic metres of water saved in 2024.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-2e3943a0324b7fe5", "title": "The Peninsula, Qatar issues new decisions regulating district cooling services (17 May 2026) (press)", "url": "https://www.thepeninsulaqatar.com/article/17/05/2026/qatar-issues-new-decisions-regulating-district-cooling-services", "publisher": { "name": null, "domain": "thepeninsulaqatar.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-13f372f569db1972" ], "temporal": { "publishedAt": "2026-05-17", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-10-04", "dossierCreatedAt": "2026-10-04", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Kahramaa-announced 2026 ministerial decisions Nos. 03 to 06: designation of district cooling service areas, licensed providers' access to public land, relocation of network parts, and compensation of property owners.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-f84ea2cb17659468", "title": "U.S. International Trade Administration, Qatar district cooling regulations (official)", "url": "https://www.trade.gov/market-intelligence/qatar-energy-district-cooling-services-regulations", "publisher": { "name": null, "domain": "trade.gov", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-df466f06e222754b" ], "temporal": { "publishedAt": "2025-04-17", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-10-04", "dossierCreatedAt": "2026-10-04", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Summary of Qatar's district cooling regulations under Law No. 19 of 2024: mandatory Kahramaa licence for 15 years, Kahramaa sets service areas and technical standards, and use of desalinated water for district cooling is prohibited.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-355a6dd51cb83b00", "title": "Gulf Times, Demand is rising for green cooling technology in Qatar (31 Mar 2013) (press)", "url": "https://gulf-times.com/story/347424/demand-is-rising-for-green-cooling-technology-in-qatar", "publisher": { "name": null, "domain": "gulf-times.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-7caaf2a610cfdb91" ], "temporal": { "publishedAt": "2013-03-31", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-10-04", "dossierCreatedAt": "2026-10-04", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Qatar Cool statement that it operates in two districts, West Bay and The Pearl-Qatar, with the two West Bay plants sold out and a third in design.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-f55d7c169100d56e", "title": "Wikipedia, The Pearl-Qatar (reference)", "url": "https://en.wikipedia.org/wiki/The_Pearl-Qatar", "publisher": { "name": null, "domain": "en.wikipedia.org", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-7caaf2a610cfdb91" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-10-04", "dossierCreatedAt": "2026-10-04", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "Infobox places The Pearl-Qatar in the Municipality of Doha, Zone 66.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } } ], "coverage": { "claimsTotal": 13, "claimsMapped": 13, "sourcesTotal": 9, "sourcesUsedByClaims": 9, "sourcesWithPublicationDate": 7, "sourcesWithArchive": 0, "sourcesWithExactLocator": 0, "sourcesWithContentHash": 0 }, "limits": [ "Publisher names and source languages have not yet been classified; domains are recorded without guessing.", "Existing source notes are descriptive locators, not page- or paragraph-exact citations.", "A missing archive, publication date or content hash is shown as null rather than inferred.", "The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim." ] } } ] }